<![CDATA[Road surface condition assessment is essential for maintaining the performance, safety, and serviceability of national road networks. Conventional International Roughness Index (IRI) surveys can require specialized equipment, motivating the use of smartphone-based applications for more accessible data collection. This study evaluates the use of the Roadroid application for assessing road surface conditions and examines its validity by comparing Roadroid IRI results with official BPJN data. Six national road sections in Pontianak City were investigated: Khatulistiwa, Gusti Situt Mahmud, Sultan Hamid II, Tanjungpura, Ahmad Yani, and Arteri Supadio. Primary data were obtained from Roadroid-based field surveys and road inventory observations, while secondary IRI and road-section information were obtained from BPJN West Kalimantan Province. Road conditions were classified using the specified IRI thresholds, followed by comparison of Roadroid and BPJN classifications and validity assessment using slope, intercept, correlation, and the prescribed acceptance limits. Roadroid identified predominantly good conditions on all six sections, with good-condition proportions of 75.36%, 83.33%, 71.43%, 90.48%, 88.57%, and 91.09%, respectively. The reported validation parameters were within or evaluated against the prescribed criteria. The findings support the practical use of Roadroid as a supplementary tool for road-condition surveys and maintenance planning.]]>
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